Steam-generator flue.



G. I. JENKINS.

STEAM GENERATOR PLUB'.

APPLICATION FILED JAN.2, 1907.

926,701. Patented June 29, 1909.

Witnesses: Inventor: I v Charles Franciselenkms, M2 we. b Maw 1n: ums PETER co.. wnsnmcron. n. cy

UNITED STATES PATENT OFFICE.

CHARLES I JENKINS, OF WASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

STEAM-GENERATOR FLUE.

Original application filed August 27, 1901, Serial No. 73,471.

Specification of Letters Patent.

Serial No. 350,327.

To all whom it may concern:

Be it known that I, CHARLES E. JENKINS, a citizen of the United States, residing at Washington, District of Columbia, have invented certain new and useful Improvements in Steam-Generator Flues, of which the following is a specification.

This application is a division of my application, Serial No. 73,471, of August 27, 1901, and is filed pursuant to a requirement of division made by the U. S. Patent Office, under Rules 41 and 42 of Office Practice.

Heretofore, great difficulty has been experienced in properly disposing of the products of combustion in motor vehicles and at the same time preventing the down drafts of air from extinguishing the fire. To avoid this objection and to secure certain advantages, I construct the flues connected with the boiler as fully set forth hereinafter and as illustrated in the accompanying drawing, which is a side view, partly in section, of so much of a motor vehicle as is necessary to illustrate my invention.

The body 1, of the vehicle may be of any suitable construction.

The generator 2 which supplies motive fluid to the vehicle motor may be of any required character, either fire tube or water tube, with a suitable burner 3 below the same and a chamber 4 inclosed by a suitable hood or casing 5 in a position to receive the products of combustion.

A flue 6, leading from the hood, has an opening 7 to the atmosphere. Between this opening and the hood, the flue has an opening 8 communicating with one end of a downwardly directed flue 9 also leading to the atmosphere. The other end portion of the fine 9 may be directed toward the rear of the vehicle. The opening 7 permits the escape of the fire gases or products of combustion when kindling a fire, or when the vehicle is at rest. Air currents entering the opening 7 would, unless some provision be made to guard against it, pass into the hood and, flowing backward or downward, would tend to extinguish the fire. I therefore, arrange adjacent the opening 8 of the fine 6, a deflector or plate 10. This deflector preferably extends into the flue 9 dividing the opening 8 into two parts or openings, and is so situated that air currents or puffs of wind entering the opening 7 will not pass to the .hood but will be deflected downward, thus, not only preventing the passage of currents back to the fire, but also as they pass downward, tending to draw the fire gases outward from the hood into the downwardly directed flue 9. The opening 8 to the hood, together with the deflector, serves as a suetion orifice or opening. WV hen there are no such down currents, the burned gases may readily escape by passing beneath the edge of the deflector 10 and out at the opening 7, so that there is no tendency to smother the fire, but on the contrary, an up-draft is maintained in the boiler which insures its continuance. The deflector is arranged to cooperate with the adjacent walls or parts to form an orifice between the hood and the flue 9 which serves to increase the suction or draft on the burner due to the passage of air currents through the flue 9.

It will be seen that the strong currents of air, so objectionable with ordinary constructions, are a material advantage with my improved construction. I therefore take advantage of this and place the flue with the opening 7 at the front of the vehicle, so that when it is moving forward the air is forcibly directed into the opening 7 and passes downward in the manner described to materially increase the draft.

The exhaust steam may also be used to direct the products of combustion downward through the flue 9 when the vehicle motor is running. In such cases, I place the exhaust nozzle 12 back of the plate 10 so as to draw out the gases from the hood and force them downward, the air passing in at the opening 7 facilitating the condensation of the steam.

The deflector 10 extends to the sides of both branches of the flue so that there can be no leakage past its edges. The branch 9 is preferably smaller than the opening 8 and its sides converge 01' flare from said opening so as to secure a more restricted passage below the opening and a greater velocity of flow of the gases. The deflector is also curved and projects into and to this extent restricts the dimensions of the flue 9.

In accordance with the provisions of the patent statutes, I have described the principle of operation of my invention, together with the apparatus which I now consider to re resent the best embodiment thereof but I (Iesire to have it understood that the apparatus shown is only illustrative, and that the invention can be carried out by other means.

hat I claim as new and desire to secure by Letters Patent of the United States, is,

1. The combination of a vehicle body, a steam generator mounted thereon, a casing for the generator including a hood which re ceives the products of combustion from the generator, a substantially horizontal flue extending from the hood along the direction of motion of the vehicle and having an air inlet directed toward the front of the vehicle, said flue having also an opening adjacent to the hood, a second flue leading from said opening to the atmosphere and extending substantially at right angles to the first named flue, and a device arranged at the junction of the two flues and combining with said fines to form an orifice through which the products of combustion from the hood pass into the second flue and thence to the outlet of said flue or to the inlet of the first flue, as condi tions may determine, said device also serving to direct into said second flue currents of air forced into the inlet of said first named flue by the motion of the vehicle, said currents flowing past the said orifice and acting to draw the products of combustion from the hood.

2. The combination of a vehicle body, a boiler mounted thereon, a casing for the boiler, a flue which opens at one end into the upper part of the casing and at the other end to the atmosphere at the front of the vehicle, said flue being provided with an opening intermediate its ends, a second flue leading from said opening to the atmosphere and extending substantially at right angles to the first named flue, a device located at the junction of the two flues and combining with said flues to form an orifice through which the products of combustion pass from the easing into the second flue, said device also serving to direct into the second flue currents of air forced into the open front end of said first named flue by the motion of the vehicle, said currents flowing past said orifice and being prevented by said device from entering the hood over the boiler.

3. The combination of a vehicle body, a boiler mounted thereon, a casing for the boiler, a substantially horizontal flue which opens at one end into the upper part of the casing to receive the products of combustion therefrom and opens at its other end to the atmosphere at the front of the vehicle, said flue having an opening adjacent to said casing, a second flue leading downward from said opening to the atmosphere, a deflector arranged at the junction of the two flues which extends across the first named flue and projects through said opening into the second flue to form an orifice through which the products of combustion pass from the easing into said second flue, said deflector also serving to direct the currents of air, forced into the open front end of the horizontal flue by the forward motion of the vehicle, downwardly into said second flue past the said orifice, to draw the products of combustion from the casing.

4. The combination of a vehicle body, a boiler mounted thereon, a casing for the boiler, a substantially horizontal flue which opens at one end into the upper part of the casing to receive the products of combustion therefrom and opens at its other end. to the atmosphere at the front of the vehicle, said flue having an opening adjacent to said casing, a second flue leading downward from said opening to the atmosphere, a deflector arranged at the junction of the two flues which extends across the first named flue and projects through said opening into the second flue to form an orifice through which the products of combustion pass from the easing into said second flue, said deflector also serving to direct the currents of air, forced into the open front end of the horizontal flue by the forward motion of the vehicle, downwardly into said second flue past the said orifice, to draw the products of combustion fromthe casing, and a steam nozzle adjacent the deflector which discharges through the orifice into said second flue to further increase the draft upon the boiler.

5. The combination of a vehicle body, a steam generator mounted on the body adj a cent its front end, a casing for the generator including a hood which receives the products of combustion from said generator, and a flue at the front of said body having an open front end and a portion extending backward and downward, said flue having a suction orifice communicating with the hood to draw the products of combustion therefrom, by reason of the currents of air forced through said. flue by the forward motion of the vehicle.

6. The combination of a vehicle body, a generator mounted on said body, a burner, a hood associated with. said generator for receiving and confining the products of combustion from the burner which heats the generator, an open-ended flue opening at and leading from the front of the vehicle backward, then downward, and opening toward the rear of the vehicle, said flue extending along the line of motion of the vehicle, and a plate depending into the downwardly extending portion of the flue and extending for a limited distance within. this said downwardly extending portion of the flue and toward its lower end.

7. The combination of a vehicle body, a generator in the body, a fuel burner, a hood associated with the generator for receiving and confining the products of combustion from the burner which heats the generator, an open-ended flue having horizontal and vertical portions, the horizontal portion opening on the front of the vehicle with its open end in a position to have forced into it air currents set up by the forward movement of the vehicle, and the vertical ortion having an extension opening toward the rear of the vehicle, and a depending plate near the juncture of the vertical and horizontal portions of the flue, said plate extending into said vertical portion of the flue and along its length for a limited distance toward its lower 10 end.

In witness whereof, I have hereunto set my hand this 28th day of December, 1906.

CHARLES F. JENKINS.

Vfitnesses:

C. HELEN TAYLOR, ARTHUR L. BRYANT. 

